{"product_id":"keystone-s-k-90-cavity-lintel","title":"Keystone S\/K-90 Cavity Lintel","description":"\u003ch3\u003eKeystone S\/K-90 Cavity Lintel\u003c\/h3\u003e\n\nThe Keystone S\/K-90 Cavity Lintel is a standard load lintel designed to support structural openings with cavity widths between 90–105 mm. It provides reliable support across door and window openings and is suitable for a wide range of domestic and light commercial building projects. The lintel is designed so that blockwork can be built tight against its inner face, ensuring proper alignment and load transfer.\n\nBefore installing floor units, a mortar bed should be placed on top of the blockwork to ensure even distribution of load. For best results and to maintain construction speed, it is recommended that lintels are propped during installation. The product descriptions provided serve as a general guide, and further technical assistance is available on request.\n\n\u003ch3\u003eAvailable Lengths\u003c\/h3\u003e \u003cul\u003e \u003cli\u003e900 mm\u003c\/li\u003e \u003cli\u003e1200 mm\u003c\/li\u003e \u003cli\u003e1500 mm\u003c\/li\u003e \u003cli\u003e1800 mm\u003c\/li\u003e \u003cli\u003e2400 mm\u003c\/li\u003e \u003cli\u003e3000 mm\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eFAQs\u003c\/h3\u003e \u003ch4\u003eWhat cavity width is the S\/K-90 lintel designed for?\u003c\/h4\u003e It is suitable for cavity widths between 90 and 105 mm, making it ideal for standard cavity wall construction. \u003ch4\u003eDo lintels need to be propped during installation?\u003c\/h4\u003e Yes. Propping is recommended to maintain stability and ensure faster, safer construction until the masonry has fully cured. \u003ch4\u003eWhy is a mortar bed required on top of the blockwork?\u003c\/h4\u003e The mortar bed helps evenly distribute the load from floor units or additional masonry, preventing point loading and ensuring structural integrity.\u003cbr\u003e\u003cp\u003eCheck out our full range of \u003ca href=\"https:\/\/jjbuildingmaterials.co.uk\/collections\/building-supplies\"\u003ebuilding supplies\u003c\/a\u003e.\u003c\/p\u003e\u003cp\u003eBrowse more \u003ca href=\"https:\/\/jjbuildingmaterials.co.uk\/collections\/lintels\"\u003elintels\u003c\/a\u003e available online.\u003c\/p\u003e","brand":"Keystone","offers":[{"title":"3000mm","offer_id":51815730184534,"sku":"163444","price":213.11,"currency_code":"GBP","in_stock":true},{"title":"1800mm","offer_id":51815730217302,"sku":"163445","price":95.03,"currency_code":"GBP","in_stock":true},{"title":"2400mm","offer_id":51815730250070,"sku":"163446","price":144.48,"currency_code":"GBP","in_stock":true},{"title":"1500mm","offer_id":51815730282838,"sku":"163447","price":76.79,"currency_code":"GBP","in_stock":true},{"title":"1200mm","offer_id":51815730315606,"sku":"163448","price":61.43,"currency_code":"GBP","in_stock":true},{"title":"900mm","offer_id":51815730348374,"sku":"163454","price":45.11,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0905\/4509\/4998\/files\/keystone-sk-90-cavity-lintel-4400016.jpg?v=1772639297","url":"https:\/\/jjbuildingmaterials.co.uk\/products\/keystone-s-k-90-cavity-lintel","provider":"JJ Building Materials","version":"1.0","type":"link"}